Werewolves in Legacy
I was skeptical when I heard that Jon Johnson had won a Legacy tournament with Hanweir Watchkeep. If I'd been told a Werewolf won a Legacy tournament, that's not the Werewolf I would have guessed.
Hanweir Watchkeep was joined by Instigator Gang, another card that is legal but completely unplayed in Standard, and somehow, thanks to Cavern of Souls —another Standard-legal card—this was good enough to beat the unfair decks of Legacy.
How? Well, it turns out that Werewolves are a lot better when your opponent can't cast spells, which is what this deck is designed to do.
The driving force behind the deck is the desire to cast Magus of the Moon with Cavern of Souls against decks that don't have enough basic lands and will no longer be able to do anything if you make that play.
If you don't draw Magus of the Moon, Trinisphere and Chalice of the Void are serviceable replacements that should similarly stop your opponents from doing anything while your Werewolves kill them.
Jon recommends cutting the five-mana creatures and some of the Phyrexian Revokers from the deck he won the tournament with, and prefers Rakka Mar, Sword of Fire and Ice, and Umezawa's Jitte.
If you're looking to kill your opponents with what is probably the worst card to win a Legacy tournament this year, I recommend Hanweir Watchkeep.